Thanks Rolf,

Firstly, I should convert hash of hashes into hash and then use join ? 

my $VAR1 = {'Tim' => {'abc' => 7, 'def' => 7, 'ghi' => 0 }, 'Adam' => 
+{ 'abc' => 0, 'def' => 0, 'ghi' => 0 }, 'keas' => { 'abc' => 0, 'def'
+ => 0, 'ghi' => 0 }};

my %h1 = ('Tim' => {'abc' => 7, 'def' => 7, 'ghi' => 0 }, 'Adam' => { 
+'abc' => 0, 'def' => 0, 'ghi' => 0 }, 'keas' => { 'abc' => 0, 'def' =
+> 0, 'ghi' => 0 });

[download]

Apologies if I wrongly understood.

In reply to Re^2: How to combine two different hashes into single hash. by Sami_R
in thread How to combine two different hashes into single hash. by Sami_R

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